/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendController.h
Sets the sort order index for the output with the given name. No-ops if output not found.
void SetSortOrderIndexForOutput ( const [FVertexName](API\Plugins\MetasoundGraphCore\FVertexName) & InName, int32 InSortOrderIndex )